Improvement in lamp-buenees



W.- ROBINSON.

Lamp Burner.

Pa tent d July 9, 1867.

NPEIERS, PHOTO-LITHOGRAPHER, WQSNINGTON, D, C.

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WILLIAM ROBINSO N, OF FUNKVILLE, PENNSYLVANIA. Letters Patent No.66,635, dated July 9, 1867.

IMPROVEMENT IN LAMP-BURNERS..

TO ALL WHOM IT MAY CONCERN:

Be it known that I, WILLIAM ROBINSON, of Funkvillc, Venango county,Pennsylvmiia, have invented a new and useful Improvement inLamp-Burners; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art-to make and use the same, reference being had .to theaccompanying drawings, forming part of this specification, in which iFigure 1 is a vertical section of my improved lamp-burner, showing themovable cone raised, taken in the line a: a, fig. 3.

Figure 2 is a similar view, showing the cone lowered.

Figure 3 is a top' view.

Similar letters of reference indicate corresponding parts.

This invention relates to an improvement in the construction oflamp-burners, and consists; in making the cone or deflector movable, byraising and lowering it within the outer perforated frame or case of theburner, to set the top nearer or further from the top of the wick-tube,and also lower it below the top .of the wick-tube. Several importantadvantages are derived from my improved arrangement of a movable cone.It enables an adjustment to be made of the cone, for burning the lampwith a high or low wick, and the draught of uconcentrated upon the flameto produce perfect combustion, and consequently secure a bright light,whether the flame is high or low, large or small. Thus the light isentirely under control, and the flame may be regulated in size andamount of combustion without affecting its intensity or brilliancy. Thesmoke, in anycasc, is all consumed, or rather there is no smoke made, asthe supply of oxygen is always adequate for the perfect combustion ofthe carbon of the oil, and consequently my improved burner corrects thenuisance of smoke-lamps, common to the ordinary burners with thefixedcone, when the wick is lowered below the point of combustion, at whichpoint only the draught of air is deflected and concentrated upon theblaze, with the stationary cone, suiliciently to supply the oxygenrequisite to produce perfect combustion. The reason why the movablecon'e has this eil'ect upon combustion in either position of-the wick,whether high or low, is, that the orilice in the top of the eone' isbrought, by raising or lowering, exactly to that position in relation tothe wick and the flame that the airis deflected upon them in its passagethrough the cone, in both positions alike, just as it is in thatposition with the stationaly cone, when the wick is raised and the llameis full. In the ordinary fixed cone, when the wick is lowered below thatpoint of combustion, the flame is sluggish and the lamp smokes, becausethe draught of air is not directed upon it, but passes above it, throughthe orifice in the cone. Hence, too, the heat of the flame is notcarried oil, but is retained in the cone and absorbed by the brass workof the burner, extending to the lamp and the chimney, thus raising thetemperature of kerosene or other hydrocarbon oils to such a degree assometimes to cause explosion. This liability to danger is also obviatel'by my improved burner, as the brass work remains' perfectly cool,whether the flame is high or low, on account of the rapid current of airinduced by the perfect combustion produced by its direct action on theflame in any position of the wick. An economical Consumption of oil mayalso be reckoned an advantage of my improved burner, both from perfectcombustion and the control of the light at any degree of magnitude,either high or low. The adjustable cone also allows the wick to betrimmed by lowering the top below the wick-tube, so that the wick can beout exactly even with the tube, instead of running the wick above thecone. My improved mode of arranging the cone to move up and down is, toconstruct a skeleton-frame connected with the 'rim that supports thechimney, which frame is set within the perforated case, and is made toturn back and forth, part ofthe way round, in opposite directions. Theframe is formed of a. ring at the bottom, which is held down by pins inthe sides of the case, and several inclined slots running from the topto the bottom ring, in which slots are fitted pins, projecting from thebottom of the cone, so that the pins can travel down the inclines andcarry the cone down, or travel up and raise the cone up, when theskeleton-frame is moved either back or forth, while the cone itself willrise and fall perpendicularly, without turning.

In the drawings, a is the perforated case or shell of the burner, fittedto a lamp in the ordinary way, but disconnected from the lip or rim 6,that holds the chimney, instead of forming a part, as usual. The rim 6sets upon the case a, and is connected with a ring, 0, that is fitted onthe inside of the case a, at its bottom, and is held in place by pins,s, projecting inside of the case a, whichallow the ring to slide underthem, and thus turn the skeleton-frame, with the rim I), back and forth,partly around the inside of the case. The rim 6 is connected with therim 0 by metal strips, e e, with slots between them, forming inclinedplanes from the bottom to the top, on the inside of the case a. The coneM has three or more pins, 7i, projecting from the lower edge,corresponding in number and position with the slots betweeirthe pairs ofinclined strips 0 e, in which slots they are introduced, so that theywill travel down the inclined planes by turning the rim 6 in onedirection, and travel up on them by turning it in the other direction,while the cone itself will rise and fall without turning to set itnearer to or further from the topof the wick-tube N. The cone M is heldin position, to slide vertically, by a guide, (Z, that extends acrossthe cone, from side to side, and fits around the wick-tube N. Near thelower part of the metal inclines e c, a bend, g, is made to set the coneat its lowest point for burning with a low wick, in which bend the pinsIt will stop, to hold the cone in place for burning low. By applyingalittle extra force, the pins will pass over the bend to the bottom ofthe inclines, at which position the top of the cone will bebelow the lapof the wick-tube, and the wick may then be, trimmed properly, which isnot possible with a stationary dome. On the rim b may' be placed a loosecircular perforated plate, It, for the support of the chimney, as shownpartially removed in fig. 3. It is obvious that the movable dome maybearranged in different ways with the same effect; for instead of the rim5 for the support of the chimney being separate from the perforated casea, it might still bcmade a part of it, as usual, and the skeleton-frameof inclined planes 0 I: might be operated by pins on the top workingthrough horizontal slots in the rim or case.

Being informed that a patent was granted to Elias J. Hale, of Foxcroft,Maine, for an improvement in camphene lamps, dated June 22, 1858, whichbroadly covers the principle of construction whereby'theveone of alamp-burner is made adjustable with respect to the wick-tube within it,or vice verse, I therefore disclaim the said'invcntion broadly, andlimit my claim to the application of an improved device for adjustingthe cone with respect to the wick-tube; and what Ido claim, -and desireto secure by Letters Patent, is

1. The construction of inclined planes, so arranged with respect to thecone and shell of a lamp-burner as to raise and lower the cone foradjustment vertically.

2. The mode of adjusting the cone by means of inclined planes 0 0,operating substantially as herein described.

The above specification of my invention signed by me this 21st dayofFebruary, 1867.

' WILLIAM ROBINSON.

Witnesses:

WILLIAM R. Mnxuou'r, JAS. Romssor.

